Improvement in window-shutters



UNITED STATES GEORGE J'. OOLBY, OF WATEBBURY, VERMONT.

IMPROVENI ENT IN WINDOW-SHUTTERS.

Specification forming part of Letters Patent No. 48,908, dated July 25,1865.

To all 'whom it may concern:

Be it known that I, GEORGE J. GOLBY, of the town of Waterbury.in theconn ty of Washington, inthe State ofVermont, have invented certain newand useful Improvements in the Mode of Holding in Position Movable Statsiu \Vindow-Shutters; and the following is a full, clear, and exactdescription of the same, reference being had to the accompanyingdrawing, making a part of this specitication, in which the figurerepresents a broken ot't' section through the edge view of amovable-slat bliudshutter.

The object ot' my invention is to hold'movable slats in any desirablepositionopen or closed-when they move so easily that the wind willchange them in their position.

My invention consists in attaching a curved corrugated sprin g to theshutter-frame, to bear ou the edge of one ofthe slats, each concave ofthe spring forming a notch, so that whenever the slat is left in thecorrugation the series of slats that are connected together by themoving rod will be held.

To enable others skilled in theart t0 make and use my invention, I willdescribe it more fully, referring to the drawing and to the lettersmarked thereon.

To either the top, middle,or bottom piece, A, ofthe frameof anordiuarily-constrncted movable-slat window-shutter I attach a spring',a, it describing a circle whose center is the pivot PATENT OFFICE.

b of the slat B, the spring being bent so as to form a series ofshortcurves, c c c c, (three or 1nore,) into which the rounded edge of theslat I B bears, so that when the slats are moved by the connecting-rodD, Whereverit is left, their they remain until their position is changedby the will otl some person.

The advantages of my improvement are that it is so simple, cheap, andeffective in its operation. They can be put upon any movable Slat-blindsfor a mere tritling expense, and are so easily operated, and they holdthe slats so perfectly wherever they are placed. When movable'slatwindow-shutters are fitted tight enough to hold in position by theirfriction on the pivots, they often, by painting, become so tight thatthey cannot be moved at all, and whentted suiicientlylooseto be easilymoved they will assume one position by the weghtof the connecting-rod,or they will open or close by the action ot' the wind on them. Thus itwill be seen that there is a necessity for some such device as the abovedescribed.

What I claim as new, and desire to secure by Letters Patent, is-

A curved corrugated spring acting on the edge of a slat to hold thesection of movable slats in any desirable position, as set forth.

GEORGE J. COLBY.

Witnesses:

JOHN S. HOLLiNGsHEAD, J. B. WOODRUFF.

